How to register service provider in laravel?

All the service providers get registered in the configuration file known as config/app.php. This is the file that contains the provider's array and here the user is able to list all the class names for the respective service providers. And by default, the set of service providers of Laravel core are listed inside this array. Now, these services providers bootstrap all the Laravel components that are core, like the mailer, cache, queue, and others. So, to register a required provider, add that provider to the array:

'providers' => [
    // Other Service Providers
    App\Providers\ComposerServiceProvider::class,
],